docs: def cli_verify_jar_signature(argument_list):
      """
      Command-line wrapper around verify()
      TODO: use trusted keystore;
      """
  
      usage_message = "jarutil v file.jar trusted_certificate.pem [SF_NAME.SF]"
      if len(argument_list) < 2 or len(argument_list) > 3:
          print(usage_message)
          return 1
  
      jar_file, certificate, sf_name = (argument_list + [None])[:3]
      try:
          verify(certificate, jar_file, sf_name)
  
      except VerificationError as error_message:
          print(error_message)
          return 1
  
      else:
          print("Jar verified.")
          return 0